Stamp



FIG. 1 is a perspective view of a stamp showing my new design;

FIG. 2 is a perspective view of the stamp inverted;

FIG. 3 is a front elevational view;

FIG. 4 is a rear elevational view;

FIG. 5 is a side elevational view, both sides being the same;

FIG. 6 is a top plan view;

FIG. 7 is a bottom plan view; and

FIG. 8 is a cross sectional view taken on a vertical center plane in FIG. 5. 

The ornamental design for a stamp, as shown and described. 